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• Revision bfc27bb614 : tx-skip experiment : improve entropy coding of coeff tokens This patch allows th

  31 mars 2015, par hui su

  Changed Paths :
   Modify /vp9/common/vp9_entropy.c

  
   Modify /vp9/common/vp9_entropy.h

  
   Modify /vp9/common/vp9_onyxc_int.h

  
   Modify /vp9/common/vp9_quant_common.c

  
   Modify /vp9/decoder/vp9_detokenize.c

  
   Modify /vp9/encoder/vp9_encodemb.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_tokenize.c

  
  
  tx-skip experiment : improve entropy coding of coeff tokens

  This patch allows the prediction residues of tx-skipped blocks
  to use probs that are different from regular transfrom
  coefficients for token entropy coding. Prediction residues are
  assumed as in band 6.

  The initial value of probs is obtained with stats from limited
  tests. The statistic model for constrained token nodes has not
  been optimized. The probs for token extra bits have not been
  optimized. These can be future work.

  Certain coding improvment is observed :
  derflr with all experiments : +6.26% (+0.10%)
  screen_content with palette : +22.48% (+1.28%)

  Change-Id : I1c0d78178ee9f3655febb6f30cdaef8ee9f8e3cc

• lavf/avidec : Read metadata EXIF tags from AVIF tag. Based on patch by Gregory Wolfe...

  26 mars 2014, par Thilo Borgmann

  lavf/avidec : Read metadata EXIF tags from AVIF tag. Based on patch by Gregory Wolfe (Kodak Alaris) <gregory.wolfe@kodakalaris.com>.
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/avidec.c

• LibAV cannot find hardware acceleration but ffmpeg does. compiled using vcpkg [closed]

  28 novembre 2024, par CottonBuds

  I'm new to ffmpeg and I've been specifically using libav as a library for C++. I'm having troubles with libav not finding "qsv" as hardware acceleration even though I compiled ffmpeg with "qsv".

  


  ffmpeg.exe is working normally and can see "qsv" but not my program that uses libav libraries.

  


  I compiled it on Windows using vcpkg.

  


  Here are some screenshots

  


  

  


  Here ffmpeg.exe can see it
when I run this code

output :


  


  it cant see it
Here is my CMakeLists.txt :

  


  cmake_minimum_required (VERSION 3.12)

project ("ViewTether")
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_TOOLCHAIN_FILE "C:/vcpkg/scripts/buildsystems/vcpkg.cmake")
set(QT_INSTALLATION_PATH "C:/Qt/6.8.0")

set(DEVICE_INSTALLER_64_PATH "${CMAKE_SOURCE_DIR}/thirdparty/usbmmidd_v2/deviceinstaller64.exe ")
add_definitions(-DDEVICE_INSTALLER_64_PATH=\"${DEVICE_INSTALLER_64_PATH}\")

# Include headers so that moc can be generated
# https://stackoverflow.com/questions/52413341/why-is-cmake-not-mocing-my-q-object-headers
file (GLOB_RECURSE SOURCES "./ViewTether/src/*.cpp" "./ViewTether/include/*.h" "./ViewTether/form/*.ui")
include_directories(./ViewTether/include)

set(CMAKE_PREFIX_PATH QT_INSTALLATION_PATH)
find_package(Qt6 REQUIRED COMPONENTS Core Widgets Network)
qt_standard_project_setup() 
  
add_executable(ViewTether ${SOURCES} "main.cpp" )

set(CMAKE_MODULE_PATH "C:/vcpkg/installed/x64-windows/share/ffmpeg" ${CMAKE_MODULE_PATH})
find_package(FFMPEG REQUIRED)
target_include_directories(ViewTether PRIVATE ${FFMPEG_INCLUDE_DIRS})
target_link_directories(ViewTether PRIVATE ${FFMPEG_LIBRARY_DIRS})
target_link_libraries(ViewTether PRIVATE ${FFMPEG_LIBRARIES})
message(${FFMPEG_LIBRARIES})

target_link_libraries(ViewTether PRIVATE Qt6::Core Qt6::Widgets Qt6::Network bcrypt mfplat mfuuid secur32)


  


  I've been stuck here for weeks
I cant get hardware acceleration to run with my program

  


  EDIT 1

  


  $FFMPEG_LIBRARIES showed me this

  


  optimizedC:/vcpkg/installed/x64-windows/lib/avfilter.libdebugC:/vcpkg/installed/x64-windows/debug/lib/avfilter.liboptimizedC:/vcpkg/installed/x64-windows/lib/avformat.libdebugC:/vcpkg/installed/x64-windows/debug/lib/avformat.liboptimizedC:/vcpkg/installed/x64-windows/lib/avcodec.libdebugC:/vcpkg/installed/x64-windows/debug/lib/avcodec.liboptimizedC:/vcpkg/installed/x64-windows/lib/swscale.libdebugC:/vcpkg/installed/x64-windows/debug/lib/swscale.liboptimizedC:/vcpkg/installed/x64-windows/lib/avutil.libdebugC:/vcpkg/installed/x64-windows/debug/lib/avutil.lib

  


  I dont understand it well but it said on the vcpkg-cmake-wrapper.cmake

  


  if(ON)
  find_package(PkgConfig )
  pkg_check_modules(libmfx  IMPORTED_TARGET libmfx)
  list(APPEND FFMPEG_LIBRARIES PkgConfig::libmfx)
  if(vcpkg_no_avcodec_target AND TARGET FFmpeg::avcodec)
    target_link_libraries(FFmpeg::avcodec INTERFACE PkgConfig::libmfx)
  endif()
  if(vcpkg_no_avutil_target AND TARGET FFmpeg::avutil)
    target_link_libraries(FFmpeg::avutil INTERFACE PkgConfig::libmfx)
  endif()
endif()


  


  So I'm assuming that if it found libmfx it should show on my FFMPEG_LIBRARIES